when(mockDelegate.getReceiveBufferSize()).thenReturn(8192);
        when(mockDelegate.getMaximumBufferSize()).thenReturn(65536);
        when(mockDelegate.getTransactionBufferSize()).thenReturn(65024);
        when(mockDelegate.getBufferCacheSize()).thenReturn(16);
        when(mockDelegate.getNotifyBufferSize()).thenReturn(1024);

        // When
        int sendBufferSize = delegatingConfig.getSendBufferSize();